Brush-holder attachment for magnetos.



0. FISCHER. BRUSH HOLDER ATTACHMENT r02 MAGNETOS. APPLICATION FILED 11211.24, 1913.

1,070,793. I I Patented Aug.19, 1913.

MTNEssEs /I \/E2JTU -60 0770 Are z; 5

NITED sTATEs PATENT ornion.

OTTO FISCHER, 0F STUTTGART, GERMANY, ASSIGLTDBTO THE FIRM OF ROBERT BOSCH,

' i 0F STUTTGART, GERMANY.

BRITSH-HOLDER ATTACHMENT FOR MAGNETOS.

Specification of Letters Patent.

Application filed April 24, 1.913. SerialHo. 763,187.

To all whom it'may concern:

Be it known that I, OTTO Fiscnnn, a subject of the Emperor of Germany,'residing at and whose post-oflice is Spittastrasse 8, Stuttgart, Germany, have invented certain new and useful Improvements in Brush- Holder Attachments for Magnetos; and I do hereby declare the following to be a. full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates 'to brush .holderattachments for magneto electric generators, wherein the brush holder is invertible in position on the generator in order that the leading in wire connected to the brush may enter at the top or the bottom of the brush holder, as may be required to more satisfactorily meet the exigencies of any part-icular installation on an automobile, for

example; and wherein a locking device pivoted to the generator cooperates with the brush holder to reliably hold it in either upright or inverted position on the generator, but in such manner that the brush holder may be readily disengaged at will without the use of a tool to remove it.

Heretofore the brush holder has been secured to a fitting surface of the magneto by providing a flange adapted to be screwed to the housing, so that if the brush holder was to be invertible in position the fitting surface had to be suiflciently' wide to provide for both positions of the flange. Ordinarily, however, this construction is not possible within the desired dimensions of a magneto generator, and hence it has been customary to manufacture two kinds of brush holders, one for the entrance of the connecting wire at the top, and the other for the entrance of the connecting wire at the bottom.

In accordance with my invention, the brush holder maybe installed in either upright or inverted position on the magneto without extending the fitting surface, and, further-- more, the brush holder is reliably held in either position by a pivoted member having latch mechanism cooperative with the brush holder in either position and adapted to be readily disengaged therefrom.

In the accompanying drawings, illustrating the preferred embodiment of my invention and a modification thereof, Figure 1 represents a side View, partly in section, of

a part ofav magneto generator provided with a. brush holder; Fig. 2 is a section on line 2-2 of Fig. 1; Fig. 3 is a View similar to Fig. l of the preferred embodiment; and Fig. 4 is a section on line 4.4 of Fig. 3.

The I nagnet-o: electric generator M having the slip ring N is provided with a housing at having a fitting surface I). The nipple of the brush holder d carrying a brush in engagement with the slip ring projects through the holec, as shown. The outer face hof'the brush holder is curved outwardly and at the summit of the arch there is a depression i. The connecting wire to for connection to the brush enters the opening 0 of the brushholder. The brush holder is shown in the; drawings in an upright position, but it is apparent. that it may be inverted to bring the opening 0 for the connecting wire at the bottom.

In the embodiment shown in Figs. 1 and :2, the locking device for the brush holder comprises the folded leaf spring f pivoted in a slot 6 in the housing by the pin 9 on an axis passing substantially through the center of curvature of the outer face it of the brush holder, so that it can be swung about the brush holder without interference.

The spring f carries a finger 70 adapted to snap into the depression 71 of the brush holder, whet-her the brush holder is in its upright or inverted position. The brush holder is held reliably in place in this way, but may be readily removed by hand merely by pressing the end of the spring downwardly to disengage the latching mecha nism.

The modification shown in Figs. 3 and t is similar to that shown in Figs. 1 and 2, excepting that the locking device comprises an arbor f bent from a flat spring and pivoted in the slots 6 and c" by the pins g and g". In this case also the axis of the pivot pins pass through the center of curvature of the outer face it of the brush holder, and the spring finger 7c snaps into the depression 2' whether the brush holder is in upright or in inverted position.

Having thus described my invention, what Iclai'm is:-

1. In a magneto electric generator, an invertible brush holder having an opening thereinto for the entrance of a connecting Wire, and a locking device pivoted to the magneto, said brush holder and locking de- Patented Au .19,191'3.

vice having cooperative latchin mechanism 5* which is engageable to hold the rush holder in place on the magneto in anupright or inverted position and which is readil disengageable to remove the brush hol er at will from the magneto; substantially as described.

2. In a magneto electric generator, an invertible brushholder having an opening thereinto for the entrance of a connecting wire, and an arbor pivoted to the magneto in such manner as to swing about the brush holder said brush holder and arbor having disengageable cooperative latching mechanism for holding the brush holder in place on the magneto in an upright or an inverted position' and for readily disengaging the' arbor and brush holder to remove the latter at will from the magneto; substantially as described.

3. In a magneto electric generator, an invertible brush holder having an opening thereinto for the entrance of a connecting wire and having a depression on an outwardly curved face, and a locking device an upright or an inverted position; subst-antially as described.

In testimony whereof I afiix my signature in presence of two Witnesses.

OTTO FISCHER.

Witnesses PAUL WoLrAR'r, HERMANN SCHNEIDER.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

25 pivoted to the magneto on an axis which- 

